Its recognition as a species stems from a bioacoustic discovery that transformed bat study across Europe. In the late 1990s, researchers recording what was then considered a single Common Pipistrelle noticed it actually emitted two clearly distinct echolocation frequencies: one around 45 kHz and another around 55 kHz. This acoustic difference coincided with real genetic differences. That finding overnight divided what was believed to be a single species, widespread across the continent, into two. The Soprano Pipistrelle is the higher-frequency species, slightly smaller than its newly separated twin. It is also one of the few cases where two such similar bat species can reliably be differentiated by sound, in contrast to most European sibling species pairs.
A very small bat, slightly smaller than the Common Pipistrelle, with dark brown fur. It is practically indistinguishable from the Common Pipistrelle to the naked eye, having been recognised as a distinct species through genetic and bioacoustic studies. Unlike most pairs of European sibling bat species, the Soprano Pipistrelle can reliably be differentiated from its sibling by its echolocation frequency.
Peak frequency between 53 and 58 kHz, noticeably higher than the Common Pipistrelle's. The FM-QCF pulse is visible on the detector as a sloped trace that flattens into a horizontal bar. Its general shape is the same as the Common Pipistrelle's, but it is shifted to a higher frequency. Duration 4-8 milliseconds. Unlike most European
Open water areas, wetland, riparian woodland and urban areas with vegetation, from lowlands to mid-mountain areas. Distributed across much of Europe, its range is very similar to that of the Common Pipistrelle. It separated relatively recently as a distinct species from the Common Pipistrelle.
Insectivorous, it hunts small flying insects, especially mosquitoes and dipterans, frequently over open water and areas of dense vegetation alongside watercourses.
Soprano Pipistrelles form breeding colonies in building crevices and tree hollows, with a strong association with open water areas for hunting. The Soprano Pipistrelle was recognised as a distinct species from the Common Pipistrelle relatively recently. Many distribution and abundance studies prior to this recognition combined data from both species without distinguishing them.
Soprano Pipistrelle populations are generally considered stable across most of its range, with no signs of widespread decline. However, historical data prior to its taxonomic separation in the mid-1990s must be interpreted with caution, as it did not distinguish between the two sibling species.
Loss of open water areas and riparian vegetation on which it depends for hunting, pollution of watercourses which reduces the availability of aquatic insects, and loss of roosts in cracks in old buildings.
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